After a torrential rainstorm, Lu Qingshan, a poor mountain villager, finds a four-year-old orphan girl named An'an on a riverbank and brings her home. Little does he know that this adorable little girl can actually understand the voices of mountains, rivers, and streams! Not only does she help the Lu family escape life-threatening dangers, but she also discovers rare medicinal herbs and underground springs one after another, bringing hope to the impoverished family. However, bullies, unscrupulous merchants, and one crisis after another soon come their way. Lu Qingshan leads his family in facing every challenge, protecting the forests, and establishing a medicinal herb processing cooperative. Eventually, he leads the entire village onto the road to prosperity. And An'an, who was once abandoned, finally finds a family that will never leave her behind.